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package org.glassfish.web.deployment.node.runtime.gf;

import com.sun.enterprise.deployment.runtime.RuntimeDescriptor;
import com.sun.enterprise.deployment.node.XMLElement;
import com.sun.enterprise.deployment.node.runtime.RuntimeDescriptorNode;
import com.sun.enterprise.deployment.xml.RuntimeTagNames;
import org.glassfish.web.deployment.runtime.LocaleCharsetMap;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* node for web property tag
*
* @author Jerome Dochez
*/
public class LocaleCharsetMapNode extends RuntimeDescriptorNode<LocaleCharsetMap> {

    protected LocaleCharsetMap descriptor = null;

    /**
     * @return the descriptor instance to associate with this XMLNode
     */
    @Override
    public LocaleCharsetMap getDescriptor() {
        if (descriptor==null) {
            descriptor = new LocaleCharsetMap();
        }
        return descriptor;
    }

    /**
     * receives notification of the value for a particular tag
     * 
     * @param element the xml element
     * @param value it's associated value
     */
    @Override
    public void setElementValue(XMLElement element, String value) {
	RuntimeDescriptor descriptor = getDescriptor();
	if (element.getQName().equals(RuntimeTagNames.LOCALE)) {
	    descriptor.setAttributeValue(LocaleCharsetMap.LOCALE, value);
	} else 
	if (element.getQName().equals(RuntimeTagNames.AGENT)) {
	    descriptor.setAttributeValue(LocaleCharsetMap.AGENT, value);
	}
	if (element.getQName().equals(RuntimeTagNames.CHARSET)) {
	    descriptor.setAttributeValue(LocaleCharsetMap.CHARSET, value);
	} 
    }    
    
    /**
     * write the descriptor class to a DOM tree and return it
     *
     * @param parent node for the DOM tree
     * @param nodeName node name for the descriptor
     * @param descriptor the descriptor to write
     * @return the DOM tree top node
     */
    @Override
    public Node writeDescriptor(Node parent, String nodeName, LocaleCharsetMap descriptor) {
	
	Element locale = (Element) super.writeDescriptor(parent, nodeName, descriptor);
	
	// description?
	appendTextChild(locale, RuntimeTagNames.DESCRIPTION, descriptor.getDescription());
	
	// locale, agent, charset attributes
	setAttribute(locale, RuntimeTagNames.LOCALE, (String) descriptor.getAttributeValue(LocaleCharsetMap.LOCALE));
	setAttribute(locale, RuntimeTagNames.AGENT, (String) descriptor.getAttributeValue(LocaleCharsetMap.AGENT));
	setAttribute(locale, RuntimeTagNames.CHARSET, (String) descriptor.getAttributeValue(LocaleCharsetMap.CHARSET));
	
	return locale;
    }
}
